speed controller

16 LETTERS · STARTS WITH S

speed controller is a valid 16-letter word worth 20 points in Scrabble and 25 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS

S1P3E1E1D2C3O1N1T1R1O1L1L1E1R1

1 + 3 + 1 + 1 + 2 + 0 + 3 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 =20 PTS

DOUBLE WORD → 40TRIPLE WORD → 60

MEANING

What does speed controller mean?